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### Highlights from Numeric to Ordinal-String

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# Numeric to Ordinal-String

### Stephen Cobeldick (view profile)

25 Jul 2013 (Updated )

Convert numeric values to a character array of integers with ordinal suffixes. Fully vectorized!

File Information
Description

Convert a numeric scalar/vector/matrix/array into a character array giving the integers and ordinal suffixes of the rounded input element values, for example the value 1 is returned as '1st'.

Similar to MATLAB's IPTNUM2ORDINAL and other files available on FEX, except that this function accepts numeric arrays (not just scalars) of any class (float, int or uint) and is fully vectorized (no loops or ARRAYFUN calls are used or required). The function rounds fractional numeric values to the nearest integer, and provides the correct suffixes for numeric values ending in 11, 12 or 13. The optional second input selects between returning the integer and suffix (default), or just the suffix (fast!).

### Examples ###

num2ordinal(1)
ans = '1st'

num2ordinal(1:6)
ans = ['1st';'2nd';'3rd';'4th';'5th';'6th']

num2ordinal([1,11,111,1111])
ans = [' 1st';' 11th';' 111th';'1111th']

num2ordinal(100:113,false)
ans = ['th';'st';'nd';'rd';'th';'th';'th';'th';'th';'th';'th';'th';'th';'th']

num2ordinal(intmax('int64')-4)
ans = '9223372036854775803rd'

num2ordinal([-0,+0])
ans = ['-0th';' 0th']

vals = [-1,-0,0;-Inf,NaN,Inf];
reshape(strtrim(cellstr(num2ordinal(vals))),size(vals))
ans = {'-1th','-0th','0th';'-Infth','NaNth','Infth'}

### Note ###

Compared to MATLAB inbuilt functions and several other M-files that are available on MATLAB File Exchange, this file:
- Correctly converts all numeric values ending in 11, 12, or 13.
- Accepts a scalar/array numeric.
- Is fully vectorized.
- Optionally returns only the ordinal suffix (fast!).
- Returns the complete digits for uint and int type numerics.
- Distinguishes between positive and negative zero.

Acknowledgements

This file inspired Number To Myriad, Number To Words, Words To Number, and Interactive Regular Expression Maker.

Required Products MATLAB
MATLAB release MATLAB 7.11 (R2010b)
MATLAB Search Path
`/`
17 Mar 2014 1.1

- Fix minor bugs with -0, int* & uint* handling.

15 Apr 2014 1.2

- Improve function description, add acknowledgements.

15 Apr 2014 1.3

- Fix minor bug with int* and uint*.

18 Apr 2014 1.4